1151511420 has 48 divisors (see below), whose sum is σ = 3225791520. Its totient is φ = 306921216.

The previous prime is 1151511407. The next prime is 1151511451. The reversal of 1151511420 is 241151511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183454 + ... + 189626.

It is an arithmetic number, because the mean of its divisors is an integer number (67203990).

Almost surely, 2^1151511420 is an apocalyptic number.

1151511420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151511420 is an abundant number, since it is smaller than the sum of its proper divisors (2074280100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151511420 is a wasteful number, since it uses less digits than its factorization.

1151511420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9294 (or 9292 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1151511420 is about 33933.9272705061. The cubic root of 1151511420 is about 1048.1483374415.

Adding to 1151511420 its reverse (241151511), we get a palindrome (1392662931).

The spelling of 1151511420 in words is "one billion, one hundred fifty-one million, five hundred eleven thousand, four hundred twenty".